Method of reinforcing mantles of refractory incandescing earths.



'E. D. GLEASON.

AGTORY INGANDESOING E APPLICATION FILED JAN. 14, 1909,

Patnted Aug". 24, 1909.

IM/ENTOR G feaowa QWW Unrrnn s rict ngre ent oration-l EDWARD D.GLEASON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR Tb FREDERIGK W. LANGE,0F

SGRANTON, PENNSYLVANEA.

METHOD OF REINFORCING MANTLES OF REFRAGTGRY INCANDESCING EARTH S.

Specification of Letters latent. Patented A11 2%, 1909.

Application filed January 14, 1909 Serial No. 472,289.

To all whom it may concern:

Be it known that l, ltowano l). Giimsox, a citizen of the United States,residing at Philadelphia in the county of ,lhiladel 'ihia and State ofPennsylvania, have invented certain new and useful Improvements in theMethod of Reinforcing Mantles ot Refractory In :andescing Earths, ot'vhich the following is a s 'iecification. My invention relates to theconstriurtion of mantles of refractory incandescing arths and consists.primarily in strengthening and reinforcing that portion of anincandescent mantle which gathered together at the top by means of a.wire or cord and provided with a loop designed for attachingthe mantleto its support.

In a gas-lighting systemof the \Velsbach type a mantle or basketcomposed of retractory earth is suspended over a gas and air mixingburner by means of a wire or'cord in the upper end of the mantle which.is connected-to'the upper end ot a supporting rod.

is is well known in the art ot mantle niakinga cotton fabric issaturated with a solution of the salts of refractory earths capable ofgiving light by incandescent-0 the textile fibers being subsequentlyourned away so that the mantle when ready for use consists of a net workof earthy substance, which is quite fragile, and liable to be easilytorn or brokem particularly.at the point where it is gathered togetherat.- the top by means of the wire or cord by which it is adapted to'besuspended. l have found in practice that this diti'icutty can beobviated by dipping the mantle in a thin solution'ol collodion or otherlike adhesive substance and then applying to the upper end of the mantlea strengthening or reinforcing solution composed of a silicatepreferably the silicate of soda. which will greatly strengthen andreinforce that portion. of the mantle to which the wire or cord isattached;

The accompanying drawing shows a front elevation of a mantle treatedaccording to my invention the portion reinforced or strengthened beingindicated ,by heavy lines.

In carrying out my invention the fabric is saturated with a solution ofthe salts of refractory earths and then placed over a Bunsen burner toburn away the textile fibers, leaving a net work oi earthy substanceexceedingly delicate and fragile. 'l his'fragile structure is thencarefully dipped in a solution of guncotton in ether and alcohol(collodion) and placed upon a holder to dry. I then dip or paint theupper end ot' the mantle containing the dry coating of e0llodion with asolution of a silicate and allow the mantle to dry thoroughly afterwhich it is'ready tor use. i

By repeated experiments I have found. that a silicate of soda will notcombine evenly with the earthy substance of the mantle but will causethe same to curl and crack making it unlit for use. The coating ofcollodiom'however, pern'iits the silicate of soda to slowly vitrily andaids it in combinilig with the earthy'substancc to form a smooth andunbroken surface of cmisiderable tenacity.

in the accompanying drawing, 1 dcsig nates the mantle; 2 the reinl'orccdupper end which has been strengthened by the application of the compoundhcretolorc mentioned, and Z-l-denotes the wire or cord by which meansthe mantle is sup iortcd.

llaving described my invention what i claim and desire to secure byLetters Patent The method of strengthening or rciutorcing mantles orbaskets of refractory iiicandcsccnt material at a point where it isgathered together at the top and provided with a suspending means. whichconsists in first applying to the mantle a coating or collodion. andthen upon the collodion at the of soda point designed to bestrengthenedasolution ot' a silicate ol soda substantially as do scribed.

In testimony whereof I attix my signature in presence of two witnesses.

nnwi nn n. GLEASON.

Witnesses:

' Annono KA'rz,

DAVID S. Wirinmms.

